INVESTIGADORES
BELLINI Mauricio
artículos
Título:
Inflation and nonequilibrium thermodynamics for the fluctuations in the infrared sector
Autor/es:
MAURICIO BELLINI
Revista:
PHYSICAL REVIEW D - PARTICLE AND FILDS
Editorial:
American Physical Society
Referencias:
Lugar: New York; Año: 2001 vol. 63 p. 87301 - 87301
ISSN:
0556-2821
Resumen:
In the framework of inflationary cosmology I study some aspects of nonequilibrium thermodynamics for the matter field fluctuations. The thermodynamic analysis is developed for de Sitter and power-law expansions of the universe. In both cases, I find that the heat capacity is negative leading respectively, to exponential and superexponential growth for the number of states in the infrared sector for de Sitter and power-law expansions of the universe. The spectrum for the matter field fluctuations can be understood from the background effective temperature at the horizon entry.
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